bigredhdt Posted August 24, 2019 Report Share Posted August 24, 2019 I need to extend the npt port on a brake relay valve so that I can get a 90 dot fitting on it. Are there any dot rated fittings with npt on both ends or should I just us regular brass pipe fittings? Quote Link to comment Share on other sites More sharing options...
RandyA Posted August 24, 2019 Report Share Posted August 24, 2019 NPT (National Pipe Thread). I was in a similar spot several years back. I did not find any NPT that had a DOT rating - only FIP. I ended up using regular brass. It is significantly thick and has no problem handling the pressure. Quote Randy, Nancy and Oscar "The Great White" - 2004 Volvo VNL670, D12, 10-speed, converted to single axle pulling a Keystone Cambridge 5th wheel, 40', 4 slides and about 19,000# with empty tanks. ARS - WB4BZX, Electrical Engineer, Master Electrician, D.Ed., Professor Emeritus - Happily Retired! Link to comment Share on other sites More sharing options...
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